Lucent Technologies MERLIN LEGEND Release 5.0 Installation Manual page 125

MERLIN LEGEND Communications System Release 5.0
Installation 555-650-140
Installing Telephones and Adjuncts
Installing Adjuncts
muti-zone paging configurations that include background music through a
Magic on Hold audio source. Bidirectional paging, also called talk-back, is
shown in Figure
Dual-Tone Multifrequency (DTMF) Signaling
You can connect external paging systems that use dual-tone multifrequency
(DTMF) signaling, such as PagePac Plus with Zone Expansion Unit paging
systems, to an LS or GS line/trunk jack programmed for paging operation,
including bidirectional paging operation (talk-back). PagePac Plus does not
require an adapter.
Zone paging systems, such as the PagePac series, require one LS or GS jack.
You can use any zone once the paging jack is activated.
You must use a Universal Paging Access Module (UPAM), or PagePal (for
PagePac series systems other than PagePac Plus) to connect a paging system
that requires contact closure, an impedance-matching transformer, or both.
Use a Loop Start Trunk Adapter when a customer-supplied paging system does
not require contact closure.
3-26.
Issue 1
June 1997
Page 3-30